Strom



XNTERMITTENT DISCHARGE MECHANISM FOR SETTLING TANKS AND THE LIKE.

S. l. NORDSTROM.

APPLICATION FILED JUNE14, 1918- Patented Sept. 30, 1919.

2 SHEETS-SHEET FIG.1.

Jvw doizauJVorZ: tram mm" an THE COLU \EIA PLANoGRM-n cn., WASHINGTON, n. L

S. J. NORDSTROM.

INTERMITTENT DISCHARGE MECHANISM FOR SETTLING TANKS AND THE LIKE.

APPLICATION FILED JUNE 14. 1918.

1,3 17,588. Patented Sept. 30, 1919.

2 SHEETSSHEET 2;

FIG. 3.

llll I HHII WW Illllllll IIIIIIIIIIIIIIIIIIII" 1 1/! "mum" SVEN JOHAN NORDSTItOM, OF MEXICO, MEXICO.

INTERMITTENT-DISCHARGE MECHANISM FOR SETTLING-TANKS AND THE LIKE.

Specification of Letters Patent.

Patented Sept. 30, 1919.

Application filed June 14, 1918. Serial No. 240,007.

To all whom it may concern:

Be it known that I, SVEN JoHAN NonnsTnoM, a subject of the King of Sweden, residing at Mexico, in the Federal District of Mexico, have invented certain new and useful Improvements in Intermittent-Discharge Mechanism for Settling-Tanks and the like,'of which the following is a specification.

The primary object of the invention is the provision of an automatic means adapted to automatically discharge the settling or thickening tanks for ores, chemicals and the like, the duration of discharge being suitably regulated to fulfil the particular requirements of the material or product being treated. I r

A further object of the invention is the provision of automatic means for opening and closing the discharge valve of a tank, the device being easily regulated as desired and easily and quickly installed in connec tion with the usual outlet and revolving shaft of such a tank. I

1V ith these general objects. in view and others that will appear as the nature of the invention is better understood, the same consists in the novel combination and arrange ment of parts hereinafter fully described and illustrated in the accompanying drawings, the device broadly providing a quick acting valve operable by a slowly moving shaft.

In the drawings forming a part of this application and in which like reference numerals designate corresponding parts throughout the several views,

Fig. 1 is a view partly in side elevation and partly in vertical section of the mechanism illustrated assembled in connection with a discharge elbow and the revolving shaft of an oresettling tank;

Fig. 2-is a horizontal transverse sectional view taken upon line IIII of Fig. 1, showing the parts as positioned when the valve is pen; a

Fig. 3 is a view of the outlet mechanism of the settling tank with my valve mechanism associated therewith,iand

Fig. 4 is a view, partly diagrammatic, showing the assembled device.

It being understood that my device is adaptable for automatically controlling the intermittent discharge from any form of tank or container, the same is herein illustrated in connection with a thickening or vertical portion 16 of the tank outletand the usual air or Water pipe 17 for cleaning or blowing out the discharge pipe, is also illustrated.

The device just illustrated is typical of the so-called door thickener which is also provided with a revolving verticalshaft 18 for the stirring or agitating means of the tank, as illustrated in Fig. 4. The shaft 18 has a speed of about one revolution in five minutes and I provide a cam 19 secured for revolving with thesaid shaft by means of a split hub 20 and suitable bolts 21.

A push rod 22 has one end provided with a head v23 secured thereon and slidably mounted in a channeled block 24 mounted upon any suitable support such as a beam 25 positioned upon the top of the tank 10. A rocker arm 26 is pivoted as at27 in a housing 28 carried by a beam 29 positioned at the upper edge of the tank 10 in a plane above the level of the launder 13. The rocker 26 is substantially T-shaped with its upright arm 30 pivoted at 31 to a head 32 adjustably threaded upon the push rod 22 at the opposite end thereof from the head 23, and provided with a lock nut 65. 1

A renewable valve seat 33' is provided upon the outlet end of the elbow 14 having a bellshaped valve 34 provided with an internal packing 35 for intermittently seating upon the seat 33 to open and close the outlet. A stem 36 is threaded into the valve 34 and secured by a lock'nut 37'. A stud 64 is centrally threaded through the valve 34'and is secured thereto by heading over the end of the stud, while the stud projects through the packing 35 and has a nut 38 thereon for securing the packing within the valve. The valve 34 is provided interiorly with spaced guides 39 positioned adjacent the periphery of the seat 33, the valve being adapted for vertical" movement when elevated by the stem 36 and lowered by the weight 40. The said weight 40 is slidably positioned around the said stem and is seated upon a-spring 41 surrounding the stem 36 and resting upon the nut 37, The shape of'the valve 34 is such as to divert the flowing of slimes downwardly into the launder 13 after leaving the seat 33.

A sleeve 42 is adjustably threaded upon the stem 36 having a collar 43 adapted to be engaged by the adjacent end 44 of the cross arm 45 of the rocker and through which end the stem 36 and sleeve 42 extend. A lock nut 46 is provided for the sleeve 42, while a counter balance weight 47 is adjustably positioned upon the opposite end portion 48 of the cross arm 45. c

V The stem'36 extends through a boxing 49 carried by the housing 28 with a sleeve 50 adjustably threaded thereon and secured in position by a nut 51, the saidsleeve having an annular shoulder 52. A tripper 53 of substantially rectangular form is sl dably mounted in the boxing 49 with the sleeve 50 .normally freely projecting through said tripper and designed when the shoulder .52 is elevated to permit the tripper 53 to be positioi'ied by means of the spring 54 be-' neath the said shoulder 52' for retaining the valve 34 open until the trip-per is released.

' A trigger 55 is pivoted as at 56 to the rocker arm and slidably moves within'the boX- ing 49 during the actuation of the rocker 26 by the push rod 22 so that the head 57 upon the inner end of the trigger may release the tripper from thestem shoulder 52.

The cam 19 is provided with a'perip'heral I depression orno'tch 58 having one abrupt side'59 and an opposlt-e inclined or outlet side 6O, it being understood that a roller 61 V shouldered in the free end of the head 23 is adapted to travel upon the periphery '62 of the cam 19 during the revolving of the latter in the direction indicated by the arrow in Fig.2 of the drawing, while the dropping of the wheel 61 into the notch 58 permits the weight 47 to inwardly shift the rod 22 bringing the arm end 44 beneath the shoulder 43 and automatically elevating the stem 36 and opening the valve 34. The weight 47 holdsthe-roller 61 against the cam 19 and is sufliciently heavy to lift the valve 34 with its stem'3'6 and-weight 40.

The operation of the device will be ap' parent from this detaildescription thereof,

it being'seenthat whenthe cam l9 ist'urned for permitting the. roller 61 to pass over the abrupt side 59 into thenotch 58, the trigger will be retracted, permitting the spr1ng'54'to move the tripper 53 beneath the shoulder 52, it being understood that the stem 36 and sleeve 50 have been simultaneously elevated by means of the'weight 47. Whenthe cam 19 is turned to position the roller 61 at the junction of the inclined or outlet side =60of the notch 58, and the spiral periphery 62of the cam 19, the distance between the collar 43 of the sleeve 42 and the end 44-of the rocker arm '26 is slightly greater than the lift of the valve so that the valve may then be closed if desired. The movement of the roller6l over the spiral periphery 62 of the cam 19 gradually prosired point upon the spiral periphery 62 of the cam 19. It will be understood that the spring '41'absorbs the force of the shock when the valve'34 closes upon its seat 33 when the stem 36 is pulled-downwardly by said weight 40 and which weight normally retains the valve 34 closed against the fluid pressure ofthe-settler or thickening tank to which the elbow 14 is connected. The discharge of fluid through, the tank outlet 12 and elbow. 14 is automatically controlled in an intermittent manner by the described mechanism. 7 1

In handling shines in pipe lines, the sand carried by the flow will disintegrate any surrounding'surface, the rapidity of which depends upon the velocity of the'fiow and the resistance which is offered to the sand, the action being like the operation of a file. If the controlling valve for slimes is closed slowly the action of the sand upon the valve seat is so great just before the valve reaches its closing point as to disintegrate or destroy the seat in a very short period of time. The same thing occurs during the opening of the valve. In handling ore slimes or the like a quick acting Valve is therefore absolutely required to the long life of the apparatus and an economical operation. My valve mechanism fulfils these requirements and is opposite in design to the ordinary valve, my mechanism being positioned entirely outside of the controlled outlet preventing contact by the sand and consequent disintegration. The turning of the cam 19 in any desired manner falls within the scope of my invention as it will be obvious that the cam may be mounted in any suitable position for operative turning by means of either the stirrer shaft 18 or any-moving member of the apparatus in connection invention is installed. H

While the form of the invention herein shown and described is what is believed to be the preferable embodiment thereof,it will be understood that minor changes may be made therein without departing from the with which the spirit and scope of the invention as claimed. I

That I claim as new is: a .1. A quick actlng me'chanlsm for the reciprocated -outlet valve of a settling tank comprising in combination with said valve a revolving cam, opening means for the valve operatively associated with the said cam, and automatic closing means carried in Y cushioned relation 2. A quick acting mechanisnr'for thereciprocated outlet valve of a settling tank, comprising-in combination with said valve, a revolving cam, opening means for the valve operatively associated with the said cam, automatic closing means carried in cushioned relation with respect to said valve, a tripper adaptedfor retaining the valve open, and a shifting trigger for the tripper adapted for disengaging the tripper and operatively associated with the said valve opening means. i

3. A quick acting mechanism for the outlet valve of a settling tank comprising in combination with said valve an operating stem for said valve, a closing weight for the valve provided in cushioned arrangement upon'the stem, a revolving cam having spiral'periphery and a notch, a rocker arm, an adjustable shoulder upon said stem adapted for engagement by one end of the arm for opening the valve, a valve opening weight adjustably positioned upon the opposite end 7 of the arm, and controlling means for said arm operatively' associated with the periphery of the cam.

A quick acting mechanism for the outlet valve of a settling tank comprising in combination with said valve an operating stem for said valve, a closing weight for the valve providedincushioned arrangement upon the stem, a. revolving cam having spiral periphery and a notch, a rocker arm,'an adjustable shoulder upon said stein adapted for engagement by one end of the arm for opening'the valve, a valve opening weight adjustably positioned upon theopposite end of the arm, a pusher rod having one end adjust-ably pivoted to the upright arm of the rocker, and a roller in the opposite end of said rod in normal contact with the periphery of the cam under the influence of said weight whereby the rocker is adapted for shifting for opening the valve upon the dropping of the roller into said notch.

5. A quick acting mechanism for the out let valve of a settling tank comprising in combination with said valve an operating stem for said valve, a closing weight for the valve provided in cushioned arrangement upon the stem, a revolving cam having spiral periphery and a notch, a rocker arm, an adjustable shoulder upon said stem adapted for engagement by one end of the arm for opening the valve, a valve opening weight adjustably positioned upon the opposite end of the arm, a pusher rod hav ing one end adjustably pivoted to the upright arm of the rocker, a roller in the opposite end of said rod in normal contact with the periphery of the cam under the influence of said weight whereby the rocker is adapted for shifting for opening the valve upon the dropping of the roller into said notch, a tripper adapted for engaging the said stein when the Yalveds open, resilient setting'means for the tripper, and a trigger adjustably connected to said rocker adapted to disconnect the tripper 'rom the stem When the roller reaches a predetermined point in its travel upon said cam whereby the valve is permitted to close.

6. A device of the class described com prising in combination with the reciprocating outlet valve of a tank, a revolving shaft, a cam secured to said shaft having a pe- "iphery of gradually increasing radius and further having a side notch, a pusher rod, separate weights adapted for opening and closing the valve, a roller upon one end of said rod maintained against said cam by said opening weight, and connections between the other ena of said rod and opening weight whereby the valve is opened when said roller enters said notch at each rotation of the cam and is closed when said roller reaches a predetermined point upon the cam.

7. A device of the class described compris ing in combination with the reciprocating outlet valve of a tank, a revolving shaft, a cam secured to said shaft having a periphery of graduallyincreasing radius and further having a side notch,a pusher rod, separate weights adapted for opening and closing the valve, a roller upon one end of, said rod maintained against said cam by said opening weight, connections between the other end of said rod and opening weight whereby the valve is opened when said roller enters said notch at each rotation of the cam and is closed when said roller reaches a predeterminedpoint upon the cam, a stem for the valve, a sleeve adjustably positioned upon the stem having an annular shoulder, a tripper surrounding said sleeve normally separated therefrom, automatic means adapted for engaging the tripper beneath said shoulder when the valve is opened, and a trigger associated with said rod and bearing upon said tripper whereby the tripper may be released from the stem when the roller is at any point on the spiral periphery of the cam.

8. A quick operating valve mechanism comprising in combination with a valve, a slowly moving shaft, a cam turned thereby, a bell crank operatively connected with said cam for automatically opening the valve, and automatic mechanism associated with the bell crank for automatically tripping the valve to close the same at a desired point in the cycle of operation.

9. An intermittent quick acting mechanism for valves comprising in combination with a reciprocating valve, a cam adapted for slow rotation, a push rod and bell crank operatively associated with said cam and valve for intermittently unseating the valve, and mechanism adjustably connected to the bell crank for retaining the valve .open a predetermined period and automatically tripping the same for closing at the termination of such period.

10. A quick acting mechanism for the outlet valve of a settling tank comprising in combination with'such valve, a slowly moving cam,an articulated bell crank and push rod operatively associated between said cam and valve whereby. the valve is snapped open when the cam reaches a predetermined point in its rotation and adjustably timed means for holding the valve open, and automatically tripping the same for snapping to its closed position.

11. A quick acting mechanism for the outlet Valve of a settling tank comprising in combination with such valve, a slowly moving cam, an articulated bell crank and push rod operatively associated between said cam and valve whereby the valve is snapped open when the cam reaches a predetermined point in its rotation, a tripper adapted for hoidi'n the valve when opened, and a trig ger ad ustably attached to the valve open mg means for automatically releasing the tripper permitting the valve to close at any desired point ofthe cycle of operation.

12. In combination with the reciprocating outlet valve of a tank, a stem for said valve, a revolving cam, a bell crank operatively connected between the said cam and stem adapted for quickly elevating the stem and valve when the cam reaches a predetermined point of rotation, a holding and releasing means for the stem adjustably associated with said bell crank, and quick closing means for the valve operable when the stem is released.

13. In combination with the reciprocating outlet'valve of a tank, a stem for said valve,

a revolving veam,a hell .crank .operatively connected tbetween the said cam and stem adapted tor quickly elevating the stem and valve when the cam teaches a predetermined point of rotation, holding means for the stem adapted .for automatic engagement therewith when the valve is opened, and re:

leasing means :torthe holding means ad justably attached'to'the bell crank adapted for operation when the cam reaches another predetermined point of rotation.

14. In combination with the reciprocating outlet valve of .a tank, a stem forsaid valve, a revolving cam, :a hell crank operatively connected between. theasaid cam and] stem adapted for quickly elevating the stem and valve when the cam reaches 'a predetermined point of rotatiomholding means for the stem adapted for automatic engagement therewith when the valve is opened, releasing means for "the holding means adjust-ably attached to the bell crank adapted for operation when the earn reaches another predetermined point of rotation, a spring ;encircling the stem, a closing weight for the valve slidably mounted upon the .stem and seated upon said spring, and a shouldered .Qopies :0! thispatent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, 317.41. I 

